package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.gulimall.common.constant.ProductConstant;
import com.atguigu.gulimall.common.to.SkuHasStockVo;
import com.atguigu.gulimall.common.to.es.SkuEsModel;
import com.atguigu.gulimall.common.to.SkuReductionTo;
import com.atguigu.gulimall.common.to.SpuBoundTo;
import com.atguigu.gulimall.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.gulimall.common.utils.PageUtils;
import com.atguigu.gulimall.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {
    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //TODO 高级部分完善
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //把这个大的vo对象所有的数据分开存储到每张表中

        //1.保存spu基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
//        this.save(infoEntity);
        this.saveBaseSpuInfo(infoEntity);

        //2.保存spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        //存储到描述图片表中
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3.保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(infoEntity.getId(), images);

        //4.保存spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            //通过attrId获取attrEntity
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //5.保存spu的积分信息 gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }


        //6.保存spu对应的所有sku信息
//        sku的基本信息pms_sku_info
        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            //寻找默认图片
            skus.forEach(item -> {
                String defaultImag = "";

                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImag = image.getImgUrl();
                    }
                }
                //    private String skuName;
                //    private BigDecimal price;
                //    private String skuTitle;
                //    private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImag);
                skuInfoService.saveSkuInfo(skuInfoEntity);
                //获取skuId
                Long skuId = skuInfoEntity.getSkuId();


                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(image -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();

                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(image.getImgUrl());
                    skuImagesEntity.setDefaultImg(image.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> {
                    //返回true是需要，返回false是过滤掉了
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());

                //sku的图片信息pms_sku_images
                skuImagesService.saveBatch(imagesEntities);

                //sku的销售属性信息pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());

                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //sku的优惠、满减等信息gulimall_sms->sms_sku_ladder/sms_sku_full_reduction/sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);

//                if(skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) ==1){
                R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                if (r1.getCode() != 0) {
                    log.error("远程保存sku优惠信息失败");
                }

            });
        }

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> queryWrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            queryWrapper.and((w) -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){
            queryWrapper.eq("catalog_id", catelogId);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            queryWrapper.eq("brand_id", brandId);
        }

        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            queryWrapper.eq("publish_status", status);
        }


        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }


    @Override
    public void up(Long spuId) {

        //1.查出当前spuId所对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        //TODO 4.查询当前sku的所有可以被用来检索的规格属性 ,sku属性只需要查询一遍
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrListForSpu(spuId);
        //获取当前sku的所有可以被用来检索的规格属性的id
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);

        HashSet<Long> idSet = new HashSet<>(searchAttrIds);

        //把当前sku的所有可以被检索的规格属性拿出来,避免冗余
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        //TODO  1.发送远程调用，库存系统查询是否有库存
        Map<Long,Boolean> stockMap = null;
        try{
            R r = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {};
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock));
        }catch (Exception e){
            log.error("库存服务查询异常，原因：", e);
        }

        //2.封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            //进行对象数据拷贝
            BeanUtils.copyProperties(sku,esModel);

            //skuPrice,skuImg|hasStock,hotScore
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //hasStock,hotScore
            //设置库存信息
            if(finalStockMap == null){
                esModel.setHasStock(true);
            }else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            //TODO 2.热度评分 0，1，2
            esModel.setHotScore(0L);

            //TODO 3.查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            //brandName,brandImg
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            //cataLogName
            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());


            return esModel;
        }).collect(Collectors.toList());

        //TODO 5.将数据发送给es进行保存
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode() == 0){
            //远程调用成功
            //TODO 6.修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //远程调用失败
            //TODO 7.重复调用 ？ 接口幂等性？重试机制
            //Feign调用留存
            /**
             * 1.构造请求数据，将对象转为json
             *      RequestTemplate =template = buildTemplateFromArgs.create(argv);
             * 2.发送请求进行执行（执行成功会解码响应数据）
             *      executeAndDecode(template)
             * 3.执行请求会有重试机制
             *      while(true){
             *          try{
             *              executeAndDecode(template);
             *          }catch(){
             *              retryer.continueOrPropagate(e)
             *              throw ex;
             *              continue;
             *          }
             *      }
             */
        }
    }


}